Inclosed fused switch



July 16, 1929. J. sAcHs l INCLOSED FUSED SWITCH Filed July 18, 1927 2 Sheets-Sheet 1 8 J Josep/7 55C/75 f. -LQU il s l 1 ll g ILL-ll July 16, 1929. .1.sAcHs INCLOSED FUSED SWITCH Filed July 1s, 1927 L .A fig/5 Cm-m-m-W Fly/5 Patented July 15, 1929.

UNITED STATES JOSEPH SACHS, F WEST HARTFORD, CONNECTICUT.

INCLOSED FUSED SWITCH.

Application filed July 18, 1927. Serial No. 206,733.

The invention relates particularly to an inclosed fused switchhaving the fuse contacts and the switch parts arranged to be respectively accessible and inaccessible through an opening in the front cover or wall of the inclosing cabinet, having a fuse cover for closing the opening in the front wall and normally preventing access to the fuse contacts, and having a movable element arranged in interlocking relationship with the fuse cover and with the switch operating handle.

An inclosed fused switch embodying the present invention is in some respects similar to that disclosed in my copending application for Inc'losed fused switches, Serial No.

709,943 tiled April 30, 1924. The said application discloses an inclosed fused switch having an openable front cover with an opening therein and a laterally movable auxiliary cover for the opening having two positions, one being a normal closed position, and the other being a laterally projecting position. In its normal position the auxiliary cover is directly obstructed against lateral movement by means of the switch handle and in its projecting position the auxiliary cover direct-ly obstructs the switch handle against movement to switch closing position.

The result of this construction is that the relatively small range of movement to lockl and unlock the cover, the actual opening o f the cover being effected by a movement-supplemental to the `movement', of the interlocking element.

A further object of the invention is to provide certain improved structural features whereby the foregoing major advantage and other secondary advantages are obtained.

In the accompanying drawings I have shown the preferred embodiment of the invention, together with a variation thereof as to certain details, but it will be understood that the drawings are intended for illustrative purposes only and are not to be construed as defining or limiting the scope of the invention, the claims forming a part of this specification being relied upon for that purpose.

Of the drawings:

Fig. 1 is a front view of an inclosed fuse switch embodying the invention.

Fig. 2 is a fragmentary side view of the switch shown in Fig. 1.

Fig. 3 is a bottom view of the switch shown in Fig. 1, the rear part being shown in elevat-ion and the front part being shown in transverse section along the line 3 3 of Fig. 1.

Fig. 4 is a fragmentary sectional view taken` along the line-4 4 of Fig. 1.

Fig. 5 is a fragmentary view similar to Fig. 3 but showing the parts in dierent relative positions. Fig. 6 is a detail view of the cover and of the slide upon which t-he cover is mounted.

Fig. 7 is a sectional view taken along the line 7-7 of Fig. 6.

Figs. 8, 9 and 10 are front, side and bottom views respectively of the guide plate for the cover and slide. g I

Figs. l1 and 12 are fragment-ary views similar respectively to Figs. 8 and 10 but showing an alternate form of guide plate.

Fig. 13 is a fragmentary sectional view somewhat similar to Fig. 5 but showing the alternate formof guide plate with .an alternate form of auxiliary cover cooperating.

therewith. The location of the section is indicated bythe line 13*13,of.Fig. 11.

As concerns the details of the cabinet' to which the invention may be applied, I do not narrowly limit myself but in orderv to clearly illustrate the invention I have shown an inclosing cabinet 1 of conventional form having a back wall 2,` side walls 3 and 4, top and bottom end walls 5 and 6. and a front wall 7. Ordinarily and preferably the front wall 7 is inthe form of an openable cover pivoted at 8, 8 to one of the walls as for instance the bottom end wall 6. The cover may be held in closed position by means of a latch 9. The front wall 7, whether constructed in the form of an openable cover or otherwise, has an opening such as l() therein.

Mounted within the cabinet is a fused switch mechanism so yarranged that the fuse contacts are accessible from the exterior of the cabinet through the opening 10 when the cover is closed and so arranged that the switch parts are inaccessibleA through the said opening when the cover is closed. The details of the fused switch mechanism may be widely varied and I do not limit myself to a fused switch mechanism of any particular form. I-Iowever, for the purpose of clearlylillustrating the invention I have shown a fused switch of the type disclosed in my copending application for Electric circuit controlling appliance, Serial No. 165,645 filed Feb. 3,

1927. The fused switch as shown comprises a base 11 of insulating material which 1s so mounted within the cabinet as to. close theu opening 10 in the front cover. Carried by the base 11 at the front thereof are `airs of fuse receiving contacts such as 12, 12 these contacts being accessible from the exterior of the cabinet through the opening 10.

The switch mechanism within the cabinet comprises stationary switch contacts 13 and 14 some of which may be electrically connected with the respective fuse contacts 12, 12.

j there is a. switch operating spindle 18 having a cranked portion 19 which extends into slot-s 20 formed in the insulating elements 17 of the switching members. The spindle 18 is mounted in bearing apertures in the side walls 3 and 4 of the cabinet and it terminates in a handle 21 movableas already described parallelly with the side wall 4 of the cabinet. Vhen the handle 21 is in the position shown by full lines in Figs. 1 and 2 the switch is in closed position. Vhen the handle is moved t-o the position shown by dotted lines shown in Fig. 3 the switch is in open position. Preferably a stop device 21 is provided for limiting the movement of the handle '21 and for preventing lateral distortion of the said handle.

In order to normally close the opening 10 in the front wall of the cabinet so as to prevent access therethrough to the fuse conbtacts, there is provided an auxiliary cover 22 which is preferably pivotally mounted for movement about an, axis parallel to the front wall or main cover 7. Preferably the auxiliary cover is movable about a pivotal axis which is vertical but as to this I do not necessarily limit myself.

. In accordance with one phase of the invention the auxiliary cover is not only pivotally mounted as described but it is also arranged to be bodily movable, when closed, in a direction parallel with the front wall or cover. In one position the cover is locked so that it cannot he opened and in another position it is unlocked so that it can be opened at will. I provide an interlocking means which is additional tothe auxiliary cover itself and which is interposed between the said cover and the switch operating device, the said means serv- Iing to prevent bodily movement of the cover out of its first said locked position when^the operating device is in its switch closing positionand the said means also serving to prevent movement of the switch operating device out of its switch vopening position when he cover is in its second said unlocked position. rPreferably the interlocking means is in the form of a laterally movable slide on the main cover having a normal position in which it is directly obstructed by the switch handle when the latter is in switch closing position and having a laterally projecting position in which it directly obstructs the handle against switch closing movement. When a laterally movable slide is provided as preferred and when the auxiliary cover is movable about a vertical axis as preferred, I do not necessarily provide for the bodily movement of the auxiliary cover as already referred to, but as illustrated provision is made for the said bodily movement of the auxiliary cover by connecting the said auxiliary cover directly with the slide. As shown in the drawings the auxiliary cover is represented at 22, this being in the form of a flat plate slightly larger than the opening 10 in the main-cover. The interlocking device or slide isvrepresented at 23 and preferably the cover1 22 is d-irectly pivoted to the slide 23 for movement about a vertical axis, hinges 24, 24 being provided for this purpose. The details of the cover and slide are clearly shown in Figs. 6 and 7. Preferably the slide has forward offset portions 23 and 23h, having their front surfaces in the same plane as the frontsurface of the cover 22. v

For holding the auxiliary cover and the slide in place on the main cover and for guiding the lateral movement thereof of the latter I provide a flat guide plate 25 which is secured to the main cover, being spaced from the front thereof as clearly indicated in Fig. 3. The auxiliary cover and the slide fit within the space between the front of the mainA cover and the rear ofthe guide plate, being free for lateral movement.' The guide plate 25 is provided with an opening' '26 which "registers with the opening 10 in thel main cover but which' is preferably somewhat larger. The auxiliary cover is normally behind the plane of the guide plate and upon being opened it moves through the said opening 26 in the guide plate.

As already stated the slide 23 has two positions, one of which has been referred to as a normal position and the other of which has been referred to as a laterally projecting position. IVhen the slide is in its normal position as shown in Figs. 1 and 3 the auxiliary cover is located in part behind the guide plate 25 and the guide plate therefore prevents the partly open the main body of the cover directly engages the guide plate at the lefthand edge 27 of the opening 26. Thus the cover itself, when open, prevents movement of the slide to its normal position.

It will be observed that, when the slide23 is in its normal position with the auxiliary" cover locked in closed position as shown in Figs. 1 and 3, it is obstructed by the switch operating handle 21 when the said handle is in its switch closing position. However,

.when the handle 21 is moved to its switch opening position as shown in dotted lines in Fig. 3 the slide2`3 can be moved toward the right to its laterally projecting position as snown in Fig. 5 in which position it directly obstructs the handle against switch closing movement. From the foregoing description it is apparent that the auxiliary cover can be 1 opened to provide access to the fuse contacts Cil only when the switch is open and that the switch can be closed only when the cover 22 is closed and locked to prevent access to the fuse contacts. f

For convenience in moving the cover 22 there is provided a knob 22', which serves as a means for moving the slide and the cover to the unlocked position of the latter and as a means for moving the cover about its hinged axis. Thus the cover can be opened by taking hold of the knob 22 and moving the cover first toward the left and then forward, and the cover can be closed by reverse of these movements. f

In order to definitely limit the movement of the slide .23 suitable stops ai'e provided Movement toward the left .beyond its normal position is prevented by a downward turned iange 28 at the right hand end. Movement toward the right beyond its proper projecting position is prevented by means of stop lugs 29 and. 30 formed on the slide and on the guide plate respectively.. The slide may be provided with an extension 31 having a. hole therein for a sealing wire and the flange of the main cover may having a similar hole at 31 so that if desired the slide may be sealed in its cover closing` position. Preferably in order to provide a more positive locking of the auxiliary cover `in closed position the said cover is provided with oppositely projecting ears 32, 32 and the opening 26 in the guide plate is provided with oppositely extending notches 33, 33 with which the 34 of the guide plate thus making the locking 'of the cover moreeffeetive.

It will be observed that, in the absence of a special means for preventing it, it might be possible for the ears 32, 32 of the auxiliary cover to'lie on the outside of the portions 34, 34 of the guide plate instead of on the inside as shown.` With the said ears 32, 3 2 on the outside a limited amount of movement of the cover and slide could be effected before the inain body of the cover is brought into firm engagement with the guide plate at 27. `With rough usage it might be possible to so bend or distort the parts as to permit the slide to be moved far enough to free the handle 21. 'Ioavoid this possibility I prefer to provide supplemental means for preventing any lateral' Fig. 5 it will be apparent that the auxiliary i cover and slide can be moved only when the 'cover is in its completely closed position. If

the cover is partly open so as to be in any position below that shown by full lines the flanges 35, 35 will interfere with the guide plate at the ylefthand edges of the notches 32, 32. If the cover is still further opened the main body of the cover will interfere with the guide plate at theflefthand edge 27 of the opening 26 asalready described.

In Figs. 11 to 13 I have shown. an alternate construction wherein the flanges 35, 35 on the ears32, 32 are omitted and wherein there are provided forward extending flanges 38, 38 on the guide plate at the top and bottom edges of the opening 26a. An inspection of Fig. 13

only when the cover is completely closed. v If the cover 22a is partly open as shown, the ears 27a, 27a on the cover will interfere with the `flanges 38, 38 on the guide plate. If the cover is further openedI the cover itself will interfere with the guide plate at the lefthand edgey 27 of the opening 26 as already described.

What I claim is:

1. In an inclosed fused switch, the combination of a cabinet having an opening in one shows that the cover and slide can be moved wall thereof, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said-opening, an exterwhich the said cover is engaged when in one closed position and from which it is disengaged when bodily moved to another position, and an interlocking means additional to the said cover and interposed between the said cover and the switch operating device,` the said means serving to prevent bodily move-` ment of the cover out of its first said locked position when the operating device is 1n its switch closing position and serving to prevent movement of the operating device out of its lunlocked position.

switch opening position when the cover is in its second said unlocked position.'

2. In an inclosed fused switch, the combination of a cabinet having an` opening in one wall thereof, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening, an externally accessibleoperating devicefor the switch, a cover for the said wall opening pivotally mounted for movement about an axis parallel with the plane of the said wall, the said cover when closed being also bodily movable in a direction parallel with the last said plane, locking means with which the said cover is engaged when in one closed position and from which it is disengaged when bodily moved to another position, and an interlocking means additional to the'said cover and interposed between the said cover and the switch operating device, the said means serv-A ing to prevent bodily movement of the cover out of its first said locked position\when the operating device is in its switch closing position and serving to prevent movement of the operating device out of its switch opening position when the cover is in its second said 3. In an inclosed fused switch, the combination of a cabinet having an openablemain cover with an opening therein, fuse/contacts and a switch withinthe cabinet respectlvely "accessible and inaccessible through the Said opening when the cover is closed, an externally accessible operating device for the switch,`an`auxiliary cover for the main cover opening vpivotally mounted for movement about an axis parallel with the plane of the main cover, the said auxiliary cover when closed being also bodily movable in a direction parallel with the last said plane, locky ing means with which the said auxiliary cover is engaged when in one closed position and from which it is disengaged when bodily moved to another position, and an interlocking means additional to the said auxiliary cover interposed between the said cover and the switch operating device, 'the said means serving to prevent bodily movement of the cover out of its first said locked position when Vthe operating device is in its switch closing position and serving to prevent movement of the operating device out of its switch opening position when the cover is in its second said unlocked position.

4. In an inclosed fused switch, the combina-V tion of a cabinet having an openable main cover 'with an opening therein, fuse contacts and a switch within the cabinet respectively handle when in switch closing position and having a laterally projecting position in whichit directly obstructs the handle against switch -closing movement, an auxiliary cover mounted on the slide and movable separately from the slide to cover or expose the opening in .the main cover and thus prevent or permit access through the opening .in the main cover to the fuse contacts within the cabinet, and means co-related with said main cover and auxiliary cover to engage the auxiliary cover and hold it in closed position when the slide is in its normal position and to disengage the auxiliary cover when the slide is in switch handle obstructing position, whereby access to said fuse contacts through the opening in the main cover may be obtained when the switch handle is in the 0H position and is pre- -vented when the switch handle is in the on position.

5. In an inclosed fused switch, the combination of a cabinet havingan openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch voperating handle adjacent one side wall of the cabinet and movable parallelly therewith, a laterally movable slideon the cover having a normal position in which it is directly obstructed by the handle when in switch closingl position andhaving a laterally projecting position in which it directly obstructs the handle against switch closing movement, an

auxiliary cover for the main cover opening pivotally mounted on the slide for movement about an axis parallel with the plane of the main cover, means mounted in fixed position on the main cover for engaging the auxiliary cover to hold it in closed position when the llO 6. In an, inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch operating handle adjacent one side wall of the cabinet and movable parallelly therewith, a laterally movable slide on the cover having a normal position in which it is directly obstructed by the handle when in switch closing position and having a laterally projecting position in which it directly obstructs the handle against switch closing movement, an auxiliary cover for the main cover opening pivotally mounted Jfor movement about an axis parallel with the plane of the main cover and perpendicular tothe direction of slide movement, means engaging the auxiliary cover to hold it in closed position when the slide is in its normal position, the said means j being disengaged from the cover upon movement of the slide to its laterally projecting position, and means for preventing the movement or' the slide from its laterally projecting position to its normal position when the auxiliary cover is open or partly open.

7. In aninclos'ed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch operating handle adjacent one side wall of the cabinet and movable parallelly-therewith, a laterally movable slide on the cover having a normal position in which it is directly obstructed by the handle when in switch closing position and having a laterally projecting position in which it directly obstructs the said handle against switch closing movement, an auxiliary coverfor the main cover opening pivotally mounted on the slide for movement about an axis parallel with the plane of the main cover and perpendicular to the direction of slide movement, means mounted in fixed position on the main cover for engaging the auxiliary cover to hold it in closed position when the cover 'and the slide are in their normal positions, the said means being disengaged from the cover upon movement of cover 0with the slide to the laterally projecting position of the latter, and means for preventing the movement of the slide from its laterally projecting position vto its normal position when the auxiliary cover 1s open or partly open.`

8. In an inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch operating handle ladjacent on'e side wall of the cabinet and movable parallelly therewith,

'a flat guide plate spaced from the front of' the main cover and having an opening registering with the cover opening, a laterallyV movable slide between the main cover and the guide plate having a normal position in which it is directly obstructed by the handle when in switch closing position and having a lat-y erally projecting position in whichrit directly obstructs the handle against switch closing movement, an auxiliary cover for the main cover opening normally located behind the plane of the guide plate and pivotally fopen- ,able through the guide plate opening when the slide is in yits laterally projecting position, means serving when the cover is open to prevent'movement of the slide from its laterally projecting position to its normal position, and locking means engaging the auxiliary cover to hold it in closed position when the slide' is in its normal position, the said means being disengaged from the cover upon movement ofthe slide toits laterally projecting position.

9. In an inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch within `the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch op-` erating handle adjacent one side wall of the cabinet and movable parallelly therewith, a fiat guide plate spaced from the front of the maincover and having .an opening registering with the cover opening, a laterally movable slide between the main cover and the 100 guide plate having a normal position in which it isdirectly obstruct-ed by the handle when' 4 in switch closing position and having a laterally projecting position in which it directly obstructs the handle against switch closing movement, an auxiliary cover for the main cover opening normally located behind: the plane or' the guide plate and pivotally openable through the guide plate opening when the slide'is in its laterally projecting position the 110 said .auxiliary 'cover when lopen serving 'as means for preventing movement of the slide from its laterally projecting position to its normal position, and locking means engagingA the auxiliary cover to hold it in closed position when the slide is in its normal position,

the said means being disengaged from the cover upon movement of the slide to its laterally projecting position.

10. In an inclosed fused switch, the com- 12o I bination of a cabinet having an 'openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switchop-v erating handle adjacent one side wall of the cabinet and movable parallelly therewith, a. flat guide plate spaced from the front of the main cover and having an opening registering with the cover opening,` a laterallymovable 13 0 slide between the main cover and the guide plate having a normal position in which it is directly obstructed by the handle when in switch closing position and having a laterally projecting position in which it directly obstructs the handle against switch closing movement, interengaging stops on the guide plate and on the slide for preventing movement of the slide beyond its said laterally projecting position, an auxiliary cover for the main cover opening normally located behind the plane of the guide plate andr pivotally openable'thorugh the guide plate opening when the slide is in its laterally projecting position and the said stops are in engagement, means serving when the cover is open to prevent move- 'ment of the slide from its laterally project-N ing position to its normal position, and locking means engaging the auxiliary cover toA hold it in closed position when the slide is in its-normal position, the said means being disengaged from the cover upon movement of the slide to its laterally projecting( position.

l1. In an inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse 'contacts and a switch within the cabinet -re spectively accessible and inaccessible through i the said opening when the cover is closed, a

switch operating handle adjacent the one side wall of the cabinet and movable parallelly therewith, a flat guide plate spaced from the front of the main cover and having an opening registering withthe cover opening and provided with notches at its opposite sides, a laterally movable slide between the main cover and the guide plate having a normal position in which it is directly obstructedby the handle when in switch closing position and having a laterally projecting position in which it directly obstructs the handle against switch closing movement, an auxiliary cover;

for the main cover-opening normally located behind the plane of tlie'guide plate and pivotally openable th rough the guide plate opening when the slide is in'its laterally projecting position, the said cover having oppositelypositioned ears movable through the notches in the guide plate, means serving when the cover is open to prevent movement of the slide from its laterally projecting position to its normal position, and locking means engaging the said ears, to hold the auxiliary cover in closed position when the slide is in its normal position, the said means being disengaged from-the ears upon movement of the slide to its laterally -projecting position. l

12. In an inclosed fused switch, the combination of a cabinet having an openable.

main cover vwith an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch operatin handle adjacent one side wall of the cabinet and movable parallelly tion in which it is directly obstructed by the Y handle when in switch closing position and having alaterally projecting position in which it directly obstructs the handle against switch closing movement, an auxiliary cover for the main cover opening pivoted to the slide and normally located behind the plane ofthe guide plate and openable through the guide plate opening when the slide is in its laterally projecting position, the said auxiliary cover normally engaging a part of the guide plate so as to be thereby held in closed position and being disengaged from the said part of the guide plate upon movement with the slide to the laterally projecting position of the latter,` and means serving when the said auxiliary cover is open or partly open to prevent the movement of the slide and the cover from the laterally projecting position of the latter t-o the normal position.

13. In an inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch within the cabinet respectively accessible and inaccessible through the said opening when the coverv is closed, a switch operating handle adjacent one side wall of the cabinet and movable parallelly therewith, v

a fiat guide plate spaced from the front of the main cover and having` an opening registering with the cover opening. a laterally movable slide between the main cover and the llaterally projecting position, the said auX- iliary cover normally engaging a part of the guide plate so as to be thereby held in closed position and being disengaged from the said part of the guide plate upon movement with the slide to the laterally projecting position of the latter and the said cover when open or partly open directly engaging the guide plate at one. edge of the opening therein to prevent the movement of the slide and the cover from the laterally projecting position of the latter to the normal position.

14. In an inclosed fused switch, the combination of a cabinet having an openable main cover with an opening therein, fuse contacts and a switch wit-hin the cabinet respectively accessible and inaccessible through the said opening when the cover is closed, a switch projecting position i ,structs the handle against switch closing mally engaging ap lthe latter.

i and a switch within the cabinet respectively ,openinr when the cover is closed, a switch opopening when th operating Ihandle adjacent one side wall of plate uponm the cabinet and movable parallelly thereerally projec with, a flatguide plate'spaced from the front the said auxiliary of the main cover and=having an opening -t-he guide plate registering with the cover opening provided therein to preven with notches at opposite sides thereof, a latand the cover from erally movable slide between the main cover position of the latte and the guide plate having a normal position and means supplemental to in which it is directly obstructed by the hangagement of the auxi dle when in switch closing position andlhavguide plate for also preve ing a laterally projecting position in which movement' of the cover an it directly obstructs the handle against switch cover is partly open.

Aand an auxiliary cover for 16. In an inclosed ening pivoted to the slide bination of a cabineth closing movement, the main cover op and normally. located behind the plane ofthe cover with an openin guide plate and openable through the guide and aswitch within t accessible and inaccessi he cover is c plate'opening when the slide is in its later-A allyprojecting position, the said auxiliary opening whent cover when open or partly open engaging erating dge of the opening cabinet and mo 'flat guide plate spaced main cover and having an op the guide plate at one e thereinto prevent the movement of the slide and the cover from the laterally projecting position of the latter to the normal position with the cover opening, a

slide betweenthe ma and the said cover having oppositely positioned ears movable through the sai in the guide plate and normally engaging a part of the guide plate so as to thereby hol the cover in closed position and being disengaged from the said part of the guide plate upon movement of th slide to the laterally projecting position of cover with an opening therein, fuse contacts accessible and inaccessible through the sai erating cabinet .and movable parallelly i flat guide plate spaced from the front of the opposi tliroug main cover and having an opening registering with the cover opening, slide between the main cover and the guide late having a normal p directly obstructed by switch closing position and having a laterally movement, an auxiliary coverl for the main cover opening pi 'mally located behind the plane of the guide plate and openable through the guide plate the said auxiliary cover norart of the guide plate so as to be thereby held in closed position and being disengaged from the said part of the guide jecting position,

in cover an 'd notches plate having a no directly obstructe d switch closingposition a projecting posit stiucts the han e cover with the movement, an auxi cover opening pivo mally locate 15,. In an yinclosed fused switch, the combiplate and opena nation of a cabinet having an openable main opening when the jecting position,

when open engagi d edge of the openin movement of the sli handle adjacent one side wall of the laterally projecting p therewith, a its normal position an tely positione h notches fin t a laterally movable mally engage a par thereby hold the co osition yin which it is which are disengaged n movemen e laterally proj ans associate the handle when in the guide upo the slide to th n which it directly obof the latter, and me i said ears and supp ment of the auxiliary cover or also preve -voted to the slide and northe guide plate f d slide to th ment of the cover an tion of the latter w e slide is in its laterally pro- Open.

In testimony my hand this 12t o vement with the slide to the latting position of the latter and cover when open engaging dge of the opening t the movement of the slide the laterally projecting normal position, the last said enliary cover with the nting the last lsaid d slide when the fused switch, the coml avingan openable main' fuse contacts he cabinet respectively.

ble through the said losed, a switch opdjacent one side wall ofthe vable parallelly therewith, a

from the front of the 'ening registering laterally movable d the guide l position in which it is d by the handle when in nd having a laterally, hicli it directly obdle against switch closing liary cover for the main ted to the slide and no'rl d the plane of the guide ble through the guide plate slide is in its laterally pro- `the said auxiliary cover 'ng the guide pl of therein to prevent de and thecover from the osition of the latter to d the said cover having ears which are movable 1 he guide plate and norf the guide plate soas to ver in closed position and from the said part of t of the cover with ectin position -with the' o the-said engagewhen open with nting the movee normal posihen the cover is partly ate at one the whereof I have hereunto set JOSEPH SACHS.v 

